Iceberg

The NIC is the only organization that names and tracks all Antarctic Icebergs. It assigns each iceberg larger than 10 nautical miles (18 km) along at least one axis a name composed of a letter indicating its point of origin and a running number. The letters used are as follows:
• A – longitude 0° to 90° W (Bellingshausen Sea, Weddell Sea)
• B – longitude 90° W to 180° (Amundsen Sea, Eastern Ross Sea)
• C – longitude 90° E to 180° (Western Ross Sea, Wilkes Land)